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Interface Signals 13

LEC-BASE

2.1.7 GPIO1

Table 2-11 lists the pin signals of the General Purpose IO header, which provides 12 pins in 2

rows, odd/even pin sequence (1, 2), and 0.079" (2.00mm) pitch. These pins are connected to

the SMARC connector over the 3.3 volt level shifter.

NOTE: Signal names relative only to the LEC-3517 module.

2.1.8 Smart Battery (H25)

Table 2-12 lists the pin signals of the Smart Battery header, which provides 9 pins in a single row

with 0.079" (2.00mm) pitch. These signals are connected to and controlled by the onboard

LTC1760 smart battery charger controller.

NOTE: Shaded table cells denote ground.

Table 2-11: General Purpose IO (GPIO1)

Pin # Signal

GPIO_28_3V (connected to SMARC pin P119)

CAM0_nPWREN_3V

(connected to SMARC pin P108)

GPIO_29_3V (connected to SMARC pin P112)

CAM1_nPWREN_3V

(connected to SMARC pin P109)

GPIO_177_3V (connected to SMARC pin P116)

CAM0_nRST_3V (connected to SMARC pin P110)

GPIO_54_3V (connected to SMARC pin P117)

CAM1_nRST_3V

(connected to SMARC pin P111)

GPIO_55_3V (connected to SMARC pin P113)

CAM_FLD_3V

(connected to SMARC pin P115)

GPIO_56_3V (connected to SMARC pin P114)

GPIO_27_3V (connected to SMARC pin P118)

Table 2-12: Smart Battery (H25)

Pin # Signal

+VE (battery and charging voltage)

1760_SCL1

(I2C bus from LTC1760 charger controller)

1760_SDA1 (I2C bus from LTC1760 charger controller)

6 TH1 (Thermistor Force/Sense connection to LTC1760 charger controller)

GND

8 GND

GND

1 2 ... 14 15 16 17 18 19 20 21 22 23 24 ... 29 30

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